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| author | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-02 13:51:02 +0200 |
|---|---|---|
| committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-02 13:51:02 +0200 |
| commit | 572676160d5639edc0ecb663147bd291841458d1 (patch) | |
| tree | 26abea75b21e81f568075075249aa3dbedad20c7 /math/basic-test.c | |
| parent | 60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f (diff) | |
| download | glibc-572676160d5639edc0ecb663147bd291841458d1.zip glibc-572676160d5639edc0ecb663147bd291841458d1.tar.gz glibc-572676160d5639edc0ecb663147bd291841458d1.tar.bz2 | |
New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
Diffstat (limited to 'math/basic-test.c')
| -rw-r--r-- | math/basic-test.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/math/basic-test.c b/math/basic-test.c index ffead2e..9e9b848 100644 --- a/math/basic-test.c +++ b/math/basic-test.c @@ -20,6 +20,9 @@ #include <float.h> #include <stdio.h> +#include <math-tests.h> + + static int errors = 0; @@ -39,6 +42,10 @@ NAME (void) \ /* Variables are declared volatile to forbid some compiler \ optimizations. */ \ volatile FLOAT Inf_var, qNaN_var, zero_var, one_var; \ + /* A sNaN is only guaranteed to be representable in variables with */ \ + /* static (or thread-local) storage duration. */ \ + static volatile FLOAT sNaN_var = __builtin_nans ## SUFFIX (""); \ + static volatile FLOAT minus_sNaN_var = -__builtin_nans ## SUFFIX (""); \ FLOAT x1, x2; \ \ zero_var = 0.0; \ @@ -49,6 +56,8 @@ NAME (void) \ (void) &zero_var; \ (void) &one_var; \ (void) &qNaN_var; \ + (void) &sNaN_var; \ + (void) &minus_sNaN_var; \ (void) &Inf_var; \ \ \ @@ -56,16 +65,41 @@ NAME (void) \ check (#FLOAT " isinf (-inf) == -1", isinf (-Inf_var) == -1); \ check (#FLOAT " !isinf (1)", !(isinf (one_var))); \ check (#FLOAT " !isinf (qNaN)", !(isinf (qNaN_var))); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " !isinf (sNaN)", !(isinf (sNaN_var))); \ \ check (#FLOAT " isnan (qNaN)", isnan (qNaN_var)); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " isnan (sNaN)", isnan (sNaN_var)); \ check (#FLOAT " isnan (-qNaN)", isnan (-qNaN_var)); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " isnan (-sNaN)", isnan (minus_sNaN_var)); \ check (#FLOAT " !isnan (1)", !(isnan (one_var))); \ check (#FLOAT " !isnan (inf)", !(isnan (Inf_var))); \ \ + check (#FLOAT " !issignaling (qNaN)", !(issignaling (qNaN_var))); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " issignaling (sNaN)", issignaling (sNaN_var)); \ + check (#FLOAT " !issignaling (-qNaN)", !(issignaling (-qNaN_var))); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " issignaling (-sNaN)", issignaling (minus_sNaN_var)); \ + check (#FLOAT " !issignaling (1)", !(issignaling (one_var))); \ + check (#FLOAT " !issignaling (inf)", !(issignaling (Inf_var))); \ + \ check (#FLOAT " inf == inf", Inf_var == Inf_var); \ check (#FLOAT " -inf == -inf", -Inf_var == -Inf_var); \ check (#FLOAT " inf != -inf", Inf_var != -Inf_var); \ check (#FLOAT " qNaN != qNaN", qNaN_var != qNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " sNaN != sNaN", sNaN_var != sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " qNaN != sNaN", qNaN_var != sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " -sNaN != -sNaN", minus_sNaN_var != minus_sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " sNaN != -sNaN", sNaN_var != minus_sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " qNaN != -sNaN", qNaN_var != minus_sNaN_var); \ \ /* \ the same tests but this time with NAN from <bits/nan.h> \ @@ -76,6 +110,11 @@ NAME (void) \ check (#FLOAT " !isinf (NAN)", !(isinf (NAN))); \ check (#FLOAT " !isinf (-NAN)", !(isinf (-NAN))); \ check (#FLOAT " NAN != NAN", NAN != NAN); \ + check (#FLOAT " NAN != qNaN", NAN != qNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " NAN != sNaN", NAN != sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " NAN != -sNaN", NAN != minus_sNaN_var); \ \ /* \ And again with the value returned by the `nan' function. \ @@ -86,6 +125,12 @@ NAME (void) \ check (#FLOAT " !isinf (-nan (\"\"))", !(isinf (-nan ## SUFFIX ("")))); \ check (#FLOAT " nan (\"\") != nan (\"\")", \ nan ## SUFFIX ("") != nan ## SUFFIX ("")); \ + check (#FLOAT " nan (\"\") != qNaN", nan ## SUFFIX ("") != qNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " nan (\"\") != sNaN", nan ## SUFFIX ("") != sNaN_var); \ + if (SNAN_TESTS (FLOAT)) \ + check (#FLOAT " nan (\"\") != -sNaN", \ + nan ## SUFFIX ("") != minus_sNaN_var); \ \ /* test if EPSILON is ok */ \ x1 = 1.0; \ @@ -108,6 +153,9 @@ void \ NAME (void) \ { \ volatile DOUBLE Inf_var, qNaN_var, zero_var, one_var; \ + /* A sNaN is only guaranteed to be representable in variables with */ \ + /* static (or thread-local) storage duration. */ \ + static volatile DOUBLE sNaN_var = __builtin_nans ## SUFFIX (""); \ FLOAT x1, x2; \ \ zero_var = 0.0; \ @@ -116,10 +164,25 @@ NAME (void) \ Inf_var = one_var / zero_var; \ \ (void) &qNaN_var; \ + (void) &sNaN_var; \ (void) &Inf_var; \ \ x1 = (FLOAT) qNaN_var; \ - check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN", isnan (x1) != 0); \ + check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, isnan", isnan (x1)); \ + check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, !issignaling", \ + !issignaling (x1)); \ + if (SNAN_TESTS (FLOAT)) \ + { \ + x1 = (FLOAT) sNaN_var; \ + check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, isnan", isnan (x1)); \ + if (SNAN_TESTS_TYPE_CAST) \ + { \ + /* Upon type conversion, a sNaN is converted into a qNaN plus an */ \ + /* INVALID exception (not checked here). */ \ + check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, !issignaling", \ + !issignaling (x1)); \ + } \ + } \ x2 = (FLOAT) Inf_var; \ check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") Inf", isinf (x2) != 0); \ } |